Creating daemon users on OS X with dscl

dscl

$ sudo dscl
> cd /Local/Default/
/Local/Default > ls Users uid
/Local/Default > create Users/_node UserShell /bin/bash
/Local/Default > create Users/_node UniqueID 300
/Local/Default > create Users/_node PrimaryGroupID 300
/Local/Default > create Users/_node NFSHomeDirectory /Users/_node

/Local/Default > ls Groups gid
/Local/Default > create Groups/_node
/Local/Default > create Groups/_node PrimaryGroupID 300

/Local/Default > append Groups/_node GroupMembership _node

$ sudo mkdir /Users/_node
$ sudo chown torgeir:_node /Users/_node
$ sudo chmod 775 /Users/_node